YASKAWA A1000 HHP - N: Special Adjustment; N1: Hunting Prevention; N2: Speed Feedback Detection Control (AFR) Tuning; N3: High Slip Braking (HSB) and Overexcitation Braking

A.11 n: Special Adjustment
The n parameters adjust more advanced performance characteristics such as Hunting Prevention, speed feedback detection,
High Slip Braking, and Online Tuning for motor line-to-line resistance.
u
n1: Hunting Prevention
No.
(Addr.
Hex)
Name Description Values Page
n1-01
(580)
Hunting Prevention
Selection
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
0: Disabled
1: Enabled
Default: 1
Range: 0, 1
158
n1-02
(581)
Hunting Prevention Gain
Setting
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
If the motor vibrates while lightly loaded, increase the gain by 0.1 until
vibration ceases. If the motor stalls, decrease the gain by 0.1 until the stalling
ceases.
Default: 1.00
Min.: 0.00
Max.: 2.50
158
n1-03
(582)
Hunting Prevention Time
Constant
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
Sets the time constant used for Hunting Prevention.
Default:
<1>
Min.: 0 ms
Max.: 500 ms
158
n1-05
(530)
Hunting Prevention Gain
while in Reverse
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
Sets the gain used for Hunting Prevention. If set to 0, the gain set to n1-02 is
used for operation in reverse.
Default: 0.00
Min.: 0.00
Max.: 2.50
158
<1> Default setting is dependent on parameter o2-04, Drive Model Selection.
u
n2: Speed Feedback Detection Control (AFR) Tuning
No.
(Addr.
Hex)
Name Description Values Page
n2-01
(584)
Speed Feedback Detection
Control (AFR) Gain
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVOLV
Sets the internal speed feedback detection control gain in the automatic
frequency regulator (AFR).
If hunting occurs, increase the set value. If response is low, decrease the set
value.
Default: 1.00
Min.: 0.00
Max.: 10.00
158
n2-02
(585)
Speed Feedback Detection
Control (AFR) Time
Constant 1
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVOLV
Sets the time constant used for speed feedback detection control (AFR).
Default: 50 ms
Min.: 0
Max.: 2000
159
n2-03
(586)
Speed Feedback Detection
Control (AFR) Time
Constant 2
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVOLV
Sets the AFR time constant to be used during Speed Search and during regen.
Default: 750 ms
Min.: 0
Max.: 2000
159
u
n3: High Slip Braking (HSB) and Overexcitation Braking
No.
(Addr.
Hex)
Name Description Values Page
n3-13
(531)
Overexcitation Deceleration
Gain
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG OLV CLVV/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG OLV CLV
Sets the gain applied to the V/f pattern during Overexcitation Deceleration
(L3-04 = 4).
Default: 1.10
Min.: 1.00
Max.: 1.40
160
A.11 n: Special Adjustment
290
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual